A screening device for mixing iron ore fines with an anti-freezing agent

Abstract

The application relates to the screening technical field and discloses a screening device for mixing iron ore powder and antifreezing agents, which comprises a rack, the top surface of the rack is inclined, a first bearing seat is installed on the rack, a roller with a rubber surface is rotationally connected to the first bearing seat, a universal joint is connected to the shaft end of the roller, the other end of the universal joint is connected with a shaft rod, a speed reducer provided on a second support seat is connected to the free end of the shaft rod, the second support seat is connected with the rack, the speed reducer is driven by a first motor provided on the rack, the first motor and the speed reducer are connected through a belt transmission to transmit power, a drum screen assembly for improving the mixing uniformity of the iron ore powder and the antifreezing agents is rotationally connected to the roller, and the mixed materials are discharged from the screen holes of the drum screen assembly. The application realizes the integration of mixing, screening, conveying and cleaning, has high mixing uniformity, high screening efficiency, is convenient to operate and maintain, and is suitable for the mixing and screening requirements of the iron ore powder and the antifreezing agents.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of screening, in particular to a screening device for mixing iron ore powder and antifreeze. BACKGROUND

[0002] In the field of logistics transportation of the steel industry, iron ore powder, as a key production raw material, often needs to be transported from the port to inland steel enterprises. In extremely low temperature environments (such as minus 35 degrees Celsius) in winter, iron ore powder is prone to freezing due to moisture, resulting in "frozen sides" and "frozen bottoms" - that is, serious adhesion of iron ore powder to the side walls and bottom of the transport carriage. This not only requires manual intervention for unloading operations, prolonging the operation time and increasing labor costs, but also requires the use of thawing facilities for thawing treatment, causing a shortage of thawing capacity and a decrease in transportation efficiency, forming a vicious cycle of "freezing-backlog-reduced efficiency", and significantly increasing the operating costs of enterprises.

[0003] To solve this problem, the industry generally uses the technical solution of adding antifreeze to the iron ore powder, the core of which is to ensure uniform mixing of the antifreeze and the iron ore powder to avoid freezing in the local unmixed area. Existing mixing processes rely on the addition of antifreeze by the loader bucket and then stirring, or directly adding antifreeze during belt conveyor transportation. However, due to the limitations of equipment structure and operation mode, problems such as uneven dispersion of antifreeze, local high or low concentration of antifreeze may occur. At the same time, the block impurities that may be mixed in the iron ore powder further hinder the full contact between the antifreeze and the iron ore powder, resulting in poor mixing effect and still not being able to completely solve the freezing problem in extremely low temperature environments.

[0004] In addition, there is a lack of a screening integrated device specifically for the mixing process of iron ore powder and antifreeze in the existing technology. Generally, the iron ore powder impurities need to be screened first, and then the mixing operation is carried out separately. The process is complicated and may cause secondary uneven mixing due to the transfer link, making it difficult to meet the efficient and precise mixing demand, and restricting the improvement of iron ore powder transportation efficiency in winter and the control of operating costs. Therefore, developing a device that can simultaneously realize the screening and impurity removal of iron ore powder and the uniform mixing of antifreeze has become a key demand to solve the freezing problem of iron ore powder transportation in low temperature environments. SUMMARY

[0005] The purpose of the present application is to provide a screening device for mixing iron ore powder and antifreeze, which solves the problem of how to provide a device that can simultaneously realize the screening and impurity removal of iron ore powder and the uniform mixing of antifreeze as proposed in the background.

[0006] The technical scheme adopted by the present application is as follows: a screening device for mixing iron ore powder and antifreeze agent, comprising a rack, the top surface of the rack being inclined; the top surface of the rack is provided with a first support seat, two first support seats form a group, and at least two groups of first support seats are arranged on the rack; two symmetrical bases are connected to the first support seat, a first bearing seat is arranged on the base, a roller is rotatably connected to the first bearing seat, a universal joint is connected to the shaft end of the roller, the other end of the universal joint is connected to a shaft rod, the free end of the shaft rod is connected to a speed reducer arranged on a second support seat, and the second support seat is connected to the rack; the speed reducer is driven by a first motor arranged on the rack, and the first motor and the speed reducer transmit power through a belt drive; a roller screen assembly for mixing iron ore powder and antifreeze agent is rotatably connected to the roller, and the mixed material is discharged from the screen hole of the roller screen assembly.

[0007] Further, the inner wall of the hopper is connected with two groups of spring seats located at the included angle of the hopper, the upper end spring seat is connected with a long spring, the lower end of the long spring is connected with a protruding rod in sliding connection with the lower end spring seat; a flap for pushing the protruding rod is rotatably connected to the outlet section of the hopper, the flap is connected with a fifth motor through a worm and gear assembly; the center of the end cover is connected with a first main air pipe extending to the outside of the material guiding bin, the side wall of the first main air pipe is connected with equally spaced first branch pipes, and the first branch pipes are connected with nozzles; a pipe seat is installed on the cross plate, a second main air pipe is connected to the pipe seat, equally spaced second branch pipes extending into the material guiding plate are installed on the side wall of the second main air pipe, and the second branch pipes are connected with nozzles; a third branch pipe is connected to the second main air pipe, a valve seat with an air flow channel is connected to the third branch pipe, a valve core with an air hole is in sliding connection with the valve seat, a push rod is connected to the valve core, the push rod is arranged on a guide rail of a support connected to the cross plate, a ball head seat is in sliding connection with the guide rail, and a cylindrical cam with a first cam groove is in sliding connection with the ball head seat and is driven by a sixth motor.

[0008] The iron ore powder and antifreeze mixing and screening device has the advantages that the frame is of a frame type inclined structure, a plurality of support seats and rubber rollers driven by universal couplings are combined, stable rolling of the drum screen assembly is ensured, material discharge is assisted by the inclined angle, part wear is reduced, power stable transmission is ensured, the drum screen assembly is innovatively provided with a double screen plate (first / second screen plate) structure matched with a third pipe body, the second screen plate can be of a C-shaped tubular or prismatic structure, caking is eliminated through secondary screening and material collision, the mixing uniformity of the iron ore powder and the antifreeze and the antifreeze dispersion effect are greatly improved, the connecting piece is provided with an adjustable double-end screw rod and a pad block, and the screen plate is convenient to replace and the spacing is convenient to adjust, the feeding system is provided with a vibration motor, a spiral auger and an up-and-down reciprocating material pipe and a wide strip-shaped screen, material pre-dispersion, uniform feeding and anti-blocking are realized, the material is prevented from being hung at the hopper angle through reciprocating movement of the flap and the convex rod, the cleaning system is combined with mechanical cleaning of the brush roller and double-path timed / synchronous gas injection cleaning (the first main gas pipe corresponds to the second screen plate, and the second main gas pipe corresponds to the first screen plate through control of the cylindrical cam), the screen plate is double-protected from material adhesion and blocking, mixed materials are concentrated and conveyed through the guide plate and the conveying belt, impurities are separated and discharged from the guide bin to improve the purity of the materials, the whole device realizes integrated and efficient operation of mixing, screening, conveying and cleaning, is convenient to operate and maintain, has strong adaptability and can stably meet the process requirements of the iron ore powder and the antifreeze mixing and screening. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is a perspective structural schematic view of the present application.

[0010] Figure 2 It is a front view structural schematic view of the present application.

[0011] Figure 3 It is a perspective structural schematic view of the frame.

[0012] Figure 4 It is a perspective structural schematic view of the drum screen assembly.

[0013] Figure 5 It is a perspective structural schematic view of the first screen plate.

[0014] Figure 6 It is a side view sectional structural schematic view of the guide plate.

[0015] Figure 7 It is a perspective structural schematic view of the guide bin.

[0016] Figure 8 It is a front view structural schematic view of the third pipe body.

[0017] Figure 9 It is a front view sectional structural schematic view of the third pipe body.

[0018] Figure 10 The second sieve plate is a perspective view.

[0019] Figure 11 The third pipe body and the second sieve plate are a perspective view.

[0020] Figure 12 The steel bar is a perspective view.

[0021] Figure 13 The cushion block is a front view.

[0022] Figure 14 The cushion block is a perspective view.

[0023] Figure 15 The brush roller is a top view.

[0024] Figure 16 The brush roller is a perspective view.

[0025] Figure 17 The bin is a front view.

[0026] Figure 18 The fourth pipe body is a front view.

[0027] Figure 19 The slide rail is a perspective view.

[0028] Figure 20 The cover plate is a perspective view.

[0029] Figure 21 The material pipe is a front view.

[0030] Figure 22 The sieve screen is a perspective view.

[0031] Figure 23 The long spring is a front view.

[0032] Figure 24 The flap is a perspective view.

[0033] Figure 25 The first main air pipe is a front view.

[0034] Figure 26 The first branch pipe is a front view.

[0035] Figure 27 The second main air pipe is a perspective view.

[0036] Figure 28 The second nozzle is a side view.

[0037] Figure 29 Fig. 1 is a perspective view of a cylindrical cam.

[0038] Figure 30 Fig. 2 is a side view of a valve seat.

[0039] In the figure: 1, frame; 2, first support seat; 3, base; 5, first bearing seat; 6, roller; 7, universal coupling; 8, shaft; 9, speed reducer; 10, second support seat; 11, first motor; 12, drum screen assembly; 13, stand; 14, bottom beam; 15, top beam; 16, vertical beam; 17, first pipe body; 18, second pipe body; 19, annular track; 20, first material blocking ring; 21, first support rod; 22, first partition ring plate; 23, first outer support ring; 24, first screen plate; 25, first positioning bolt; 26, first vertical rod; 27, cross plate; 28, material guide plate; 29, discharge gap; 32, second vertical rod; 33, top plate; 34, material guide bin; 35, connecting piece; 36, third pipe body; 37, second material blocking ring; 38, second support rod; 39, second partition ring plate; 40, second outer support ring; 41, second screen plate; 42, second positioning bolt; 43, reinforcing bar; 44, screw hole; 45, double-headed screw rod; 46, cutting surface; 47, cushion block; 48, countersunk screw; 49, second bearing seat; 50, brush roller; 51, chain transmission; 52, second motor; 53, extension frame; 54, machine base; 55, support leg; 56, slide rail; 57, slide seat; 58, carrier plate; 59, third vertical rod; 60, hopper; 61, vibration motor; 62, fourth pipe body; 63, push plate; 64, telescopic rod; 65, third motor; 66, spiral auger; 67, end cover; 68, discharge port; 69, cover plate; 70, first round port; 71, slide column; 72, return spring; 73, panel; 74, second round port; 75, material pipe; 76, screen mesh; 77, third bearing seat; 78, rotating shaft; 79, fourth motor; 80, first cam; 81, spring seat; 82, long spring; 83, protruding rod; 84, flap; 85, worm and gear assembly; 86, fifth motor; 87, first main air pipe; 88, first branch pipe; 89, first nozzle; 90, pipe seat; 91, second main air pipe; 92, second branch pipe; 93, second nozzle; 94, third branch pipe; 95, valve seat; 96, air flow passage; 97, valve core; 98, air hole; 99, push rod; 100, support seat; 101, ball head seat; 102, cylindrical cam; 103, sixth motor; 104, guide rail. DETAILED DESCRIPTION

[0040] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like reference numerals and characters throughout the figures denote the same or like components, functions, or the like. The embodiments described below are exemplary, and are not intended to be limiting of the present application.

[0041] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like are based on the orientations or positional relationships shown in the drawings, and are merely for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the present application.

[0042] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh", "eighth", "ninth", and "tenth" are merely used for descriptive purposes, and are not intended to indicate or imply relative importance or imply a specified number of the technical features indicated.

[0043] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", and "connection" should be understood broadly, for example, it can be a fixed connection, or a detachable connection, or an integral connection; for those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] As Figure 1 and Figure 2As shown, embodiment one, a screening device for mixing iron ore powder and antifreeze agent, comprising a rack 1, the top surface of the rack 1 is inclined, the inclination angle is 2°-10°; the top surface of the rack 1 is provided with a first support seat 2, two first support seats 2 form a group, and at least two groups of first support seats 2 are arranged on the rack 1; a base 3 is connected to the first support seat 2, the number of the base 3 is two, and the two bases 3 are symmetrically arranged; a first bearing seat 5 is fixed on the base 3 through a bolt, a roller 6 is rotatably connected to the first bearing seat 5, the wheel surface of the roller 6 is made of rubber material, a universal joint 7 is connected to the shaft end of the roller 6, the other end of the universal joint 7 is connected to a shaft rod 8, the free end of the shaft rod 8 is connected to a speed reducer 9, the speed reducer 9 is arranged on a second support seat 10, and the second support seat 10 is connected to the rack 1; the speed reducer 9 is driven by a first motor 11, the first motor 11 and the speed reducer 9 are connected through a belt drive to realize power transmission, and the first motor 11 is arranged on the rack 1; a roller screen assembly 12 is rotatably connected to the roller 6, the roller screen assembly 12 is used to improve the uniformity of the mixture of iron ore powder and antifreeze agent, and the mixed antifreeze agent and iron ore powder are discharged from the screen hole of the roller screen assembly 12. The technical problems that can be solved are: the existing iron ore powder and antifreeze agent mixing process has poor mixing uniformity, low screening efficiency, cannot realize integrated operation of mixing and screening, and it is difficult to concentrate the material after discharge. Movement process: the first motor 11 is started, power is transmitted to the speed reducer 9 through the belt drive, the speed reducer 9 drives the shaft rod 8 to rotate, the shaft rod 8 drives the roller 6 to rotate through the universal joint 7, and the roller 6 drives the roller screen assembly 12 to roll; after the iron ore powder and antifreeze agent enter the roller screen assembly 12, they are mixed by rolling with the roller screen assembly 12, and the mixed material is discharged from the screen hole of the roller screen assembly 12. Advantageous effects: the top of the rack 1 is inclined (2°-10°), which can improve the mixing uniformity of the iron ore powder and antifreeze agent, and can also assist the discharge of the material by using the inclination angle; the rubber material of the roller 6 can reduce the wear of the roller screen assembly 12, the universal joint 7 can adapt to the angle deviation in the transmission process, ensure stable power transmission, realize synchronous mixing and screening, and improve the operation efficiency.

[0045] As Figure 3As shown, as the optimization of Embodiment One, the rack 1 comprises columns 13, 4 pairs of columns 13 are symmetrically arranged, the lower side wall of the column 13 is connected with a bottom beam 14, the bottom beam 14 is horizontally arranged, and the bottom beam 14 and the column 13 form a frame structure; the top surface of the column 13 is connected with a top beam 15, the top beam 15 is inclinedly arranged, and the top beam 15 and the column 13 form a frame structure; the first support seat 2 is mounted on the top beam 15, and the vertical beams 16 are arranged at equal intervals between the top beam 15 and the bottom beam 14. The technical problems that can be solved: the existing rack 1 has poor structural stability, cannot stably support the drum screen assembly 12 and other components, and the component mounting position is not clear, which can easily cause the rack 1 to deform and affect the equipment operation. Beneficial effects: the frame structure (columns 13, bottom beams 14, top beams 15, vertical beams 16) greatly improves the structural stability and carrying capacity of the rack 1, can stably support the drum screen assembly 12, the motor, the speed reducer 9 and other components, and avoids the deformation of the rack 1 during equipment operation; the inclined arrangement of the top beam 15 provides a basis for the subsequent installation of the drum screen assembly 12 and the inclined discharge of the material, the component mounting position is clear, and the equipment assembly and maintenance are facilitated.

[0046] As Figure 4 and Figure 5As shown, as the optimization of embodiment one, the drum screen assembly 12 includes a first tube body 17 and a second tube body 18, the first tube body 17 and the second tube body 18 are symmetrically arranged, the outer side wall of the first tube body 17 and the second tube body 18 is connected with an annular track 19, and the annular track 19 is located at the inner side port of the first tube body 17, the annular track 19 is matched with the roller 6; the outer side port of the first tube body 17 and the second tube body 18 is connected with a first material blocking ring 20; the inner side wall of the first tube body 17 and the second tube body 18 is connected with a first support rod 21 arranged at equal angles, a plurality of first support rods 21 form a ring structure, the outer side wall of the first support rod 21 is connected with a first separation ring plate 22, the outer side wall of the first support rod 21 is connected with a first outer support ring 23, two first outer support rings 23 form a group, the first outer support ring 23 is located between the first separation ring plate 22, and a first screen plate 24 is installed on the first outer support ring 23, the first screen plate 24 is used for screening iron ore powder and antifreeze, ensuring uniform dispersion of the antifreeze, the shape of the first screen plate 24 is C-shaped, two first screen plates 24 are fixed through a first positioning bolt 25, and two first screen plates 24 form a tubular screening structure. The technical problems that can be solved are: the existing drum screen structure is single, the screening area is limited, the iron ore powder and the antifreeze are not fully screened after being mixed, the antifreeze is not evenly dispersed, and the screen plate is not convenient to install and disassemble and is difficult to maintain. Movement process: the drum screen assembly 12 is connected with the roller 6 through the annular track 19 and rolls synchronously with the rotation of the roller 6; after the iron ore powder and the antifreeze enter the drum screen assembly 12, they are screened by the rotating first screen plate 24 in the space formed by the first tube body 17 and the second tube body 18, and the first support rod 21, the first separation ring plate 22 and the first outer support ring 23 ensure the stable fixation of the first screen plate 24, two C-shaped first screen plates 24 are fixed through a first positioning bolt 25 to form a tubular screening structure, ensuring continuous screening process. Advantageous effects: the annular track 19 is matched with the roller 6 to ensure stable rotation of the drum screen assembly 12; the first screen plate 24 adopts a C-shaped structure and is fixed through a bolt, which is convenient for installation, disassembly and maintenance and replacement; the support structure composed of a plurality of first support rods 21, first separation ring plates 22 and first outer support rings 23 improves the structural strength of the first screen plate 24 and avoids deformation of the screen plate; the tubular screening structure increases the screening area, making the screening of the iron ore powder and the antifreeze more sufficient and improving the uniformity of the dispersion of the antifreeze.

[0047] As Figure 6 and Figure 7As shown, as the optimization of embodiment one, the first vertical rod 26 is arranged on the top beam 15 of the rack 1 at equal intervals, the upper end of the first vertical rod 26 is connected with the cross plate 27, the cross plate 27 is located between the two annular tracks 19; the cross plate 27 is connected with the guide plate 28, the guide plate 28 makes the mixed material concentrated in the middle, the discharge gap 29 is left between the two sides of the guide plate 28, the conveyor belt can be arranged below the discharge gap 29 to send the mixed material to the hopper; the second vertical rod 32 is connected on the top beam 15 of the rack 1, the upper end of the second vertical rod 32 is connected with the top plate 33, the shape of the top plate 33 is U-shaped, the bottom surface of the top plate 33 is connected with the guide bin 34, the guide bin 34 makes the impurities in the iron ore powder concentrated and discharged. The technical problems that can be solved: the mixed and screened material is easy to disperse, difficult to collect and transport, and the impurities in the iron ore powder cannot be effectively separated and discharged, affecting the purity of the material. Movement process: after the mixed and uniform material is discharged from the screen hole of the drum screen assembly 12, it falls on the guide plate 28, the guide plate 28 guides the material to the middle discharge gap 29, the conveyor belt below the discharge gap 29 transports the material to the hopper; the impurities in the iron ore powder cannot pass through the screen hole and are brought into the guide bin 34 with the rotation of the drum screen assembly 12, the guide bin 34 concentrates and discharges the impurities. Advantageous effects: the guide plate 28 realizes the concentration and guidance of the material, the discharge gap 29 cooperates with the conveyor belt to facilitate the continuous collection and transportation of the material, and improves the material transfer efficiency; the guide bin 34 can effectively collect and discharge the impurities in the iron ore powder, improve the purity of the mixed material, and meet the requirements of subsequent production on the quality of the material.

[0048] As Figure 8 and Figure 9As shown, as an optimization of embodiment one, the inner walls of the first tube body 17 and the second tube body 18 are fixed with a third tube body 36 through the connecting piece 35, the outer side port of the third tube body 36 protrudes outside the first tube body 17 (the second tube body 18), and the outer side port of the third tube body 36 is connected with a second material blocking ring 37; the inner side of the third tube body 36 is connected with second support rods 38 arranged at equal angles, and the second support rods 38 form a ring structure, the outer side wall of the second support rod 38 is connected with a second separation ring plate 39, the outer side wall of the second support rod 38 is connected with a second outer support ring 40, two second outer support rings 40 form a group, and the group of second outer support rings 40 is located between the second separation ring plates 39, and the second outer support ring 40 is installed with a second sieve plate 41, which is used for screening the iron ore powder and the antifreezing agent, and further improving the uniform dispersion of the antifreezing agent. The technical problems that can be solved are that single screening cannot meet the needs of sufficient mixing and dispersion of the iron ore powder and the antifreezing agent, it is difficult to eliminate the caked materials, and the sieve plate structure is fixed and cannot be adjusted according to the characteristics of the materials. The movement process is that the iron ore powder and the antifreezing agent are first preliminarily screened and mixed by the first sieve plate 24, then enter the third tube body 36, and are further screened and mixed by the second sieve plate 41 while rotating with the drum screen assembly 12; if a prismatic screening structure (such as 10 plate-shaped second sieve plates 41) is used, the materials will collide and break the caked materials when rotating in the prismatic space. The beneficial effects are that the double-sieve-plate (the first sieve plate 24+the second sieve plate 41) structure realizes secondary screening and mixing, further improves the dispersion uniformity of the antifreezing agent, the prismatic screening structure eliminates caking through material collision, and improves the mixing quality of the materials; the second sieve plate 41 can adopt a C-shaped or plate-shaped structure, which can be adjusted according to the characteristics of the materials, and enhances the applicability of the equipment.

[0049] As shown in Figure 10 Further, the shape of the second sieve plate 41 is C-shaped, and two second sieve plates 41 are fixed through a second positioning bolt 42, and two second sieve plates 41 form a tubular screening structure.

[0050] As shown in Figure 11 Further, a deformed structure of the second sieve plate 41 is proposed, the shape of the second sieve plate 41 is plate-shaped, and adjacent second sieve plates 41 are fixed through a second positioning bolt 42, for example, 10 second sieve plates 41 are used to form a decagonal prismatic screening structure, and the prismatic screening makes the materials collide and eliminate caked materials.

[0051] As shown in Figure 12-14As shown, as an optimization of Embodiment 1, firstly, the connector 35 uses steel bars 43, the two ends of which are welded and fixed to the first pipe body 17 and the third pipe body 36, and the two ends of which are welded and fixed to the second pipe body 18 and the third pipe body 36; in order to facilitate the replacement of the second screen plate 41, an improved connector 35 is proposed; the pipe walls of the first pipe body 17 and the third pipe body 36 are provided with corresponding screw holes 44, and the pipe walls of the second pipe body 18 and the third pipe body 36 are provided with corresponding screw holes 44; the connector 35 includes a double-ended screw 45, which passes through the screw hole 44, and the side wall of the double-ended screw 45 has a cut surface 46, on which a pad 47 is fastened. The number of pads 47 can be adjusted according to the interval between the first pipe body 17 and the third pipe body 36. The shape of the pad 47 is C-shaped, and the opposite pads 47 are fixed by countersunk screws 48. Technical problem solved: The need to disassemble and weld the structure when replacing the second screen plate 41, resulting in cumbersome operation. Beneficial effects: No welding required, disassembly and installation are simple, significantly reducing the difficulty of replacing the second screen plate 41 and decreasing equipment maintenance time and costs.

[0052] like Figure 15 and Figure 16 As shown, as an optimization of Embodiment 1, a second bearing seat 49 is installed on the top beam 15. Two second bearing seats 49 form a group, and a brush roller 50 is rotatably connected to the second bearing seat 49. The brush roller 50 is used to clean the material on the drum screen assembly 12. The brush roller 50 is connected to a second motor 52 via a chain drive 51, and the second motor 52 is located on the top beam 15. The technical problem that can be solved is that during the screening process of the drum screen assembly 12, material easily adheres to the surface of the screen plate, causing screen hole blockage and affecting screening efficiency and subsequent material mixing effect. Movement process: The second motor 52 starts and drives the brush roller 50 to rotate via the chain drive 51. The brush roller 50 contacts the surface of the drum screen assembly 12, and while the drum screen assembly 12 is rotating, the brush roller 50 cleans the material adhering to its surface. Beneficial effects: The rotation of the brush roller 50 can effectively remove the attached material from the surface of the drum screen assembly 12, prevent the screen holes from clogging, and ensure stable screening efficiency; the chain drive 51 reliably transmits power, adapts to the movement coordination between the brush roller 50 and the drum screen assembly 12, reduces equipment failures, and extends the service life of the screen plate.

[0053] like Figure 17-19As shown, as the optimization of embodiment one, the rack 1 is connected with an extension frame 53, the top surface of the extension frame 53 is inclined, and the top surface of the extension frame 53 is flush with the top surface of the rack 1; the extension frame 53 is connected with a machine base 54, the bottom surface of the machine base 54 has four supporting legs 55 connected with the extension frame 53; the top surface of the machine base 54 is connected with slide rails 56, two slide rails 56 are symmetrically arranged, a sliding seat 57 is slidingly connected with the slide rails 56, a load plate 58 is connected with the sliding seat 57, two symmetrically arranged third vertical rods 59 are installed on the load plate 58, a hopper 60 is connected with the top surface of the third vertical rods 59, the hopper 60 is in the shape of a cone, and a vibration motor 61 is installed on the side wall of the hopper 60; a fourth pipe body 62 is connected with the lower end of the hopper 60, a push plate 63 is connected with the side wall of the fourth pipe body 62, the push plate 63 is driven by a telescopic rod 64 connected with the machine base 54; a third motor 65 is connected with one end of the fourth pipe body 62, a spiral auger 66 is connected with the shaft end of the third motor 65, an end cover 67 is connected with the other end of the fourth pipe body 62, and the end cover 67 is rotationally connected with the spiral auger 66; a discharge port 68 is formed in the side wall of the fourth pipe body 62, the discharge port 68 extends into the drum screen assembly 12, and the fourth pipe body 62 is coaxially arranged with the first screen plate 24 (the second screen plate 41), the diameter of the fourth pipe body 62 is smaller than the diameter of the third pipe body 36. The technical problems that can be solved are that the existing feeding method is easy to cause material accumulation, uneven feeding, and unable to control the feeding speed, affecting the mixing and screening effect of the drum screen assembly 12, and the hopper 60 is easy to be blocked. Movement process: the iron ore powder and the anti-freezing agent are poured into the hopper 60, the vibration motor 61 is started to vibrate the hopper 60 to prevent material accumulation; the third motor 65 drives the spiral auger 66 to rotate, the push plate 63 adjusts the position of the fourth pipe body 62 under the drive of the telescopic rod 64, the material enters the fourth pipe body 62 from the lower end of the hopper 60, is conveyed to the discharge port 68 through the spiral auger 66, and the discharge port 68 uniformly feeds the material into the drum screen assembly 12; the sliding seat 57 can slide along the slide rails 56 to adjust the overall position of the hopper 60 and the fourth pipe body 62 to adapt to different feeding requirements. Advantageous effects: the vibration motor 61 cooperates with the spiral auger 66 to realize uniform and stable feeding of the material, avoiding material accumulation and hopper 60 blockage; the telescopic rod 64 and the slide rails 56 can adjust the feeding position and speed to adapt to the running state of the drum screen assembly 12, ensuring stable mixing and screening effect; the conical hopper 60 increases the feeding capacity and improves the feeding efficiency.

[0054] As Figure 20-22As shown, as the optimization of embodiment one, the upper port of the hopper 60 is connected with a cover plate 69, the center of the cover plate 69 has a first circular port 70; the top surface of the cover plate 69 is installed with four symmetrically arranged slide columns 71, the side wall of the slide column 71 is sleeved with a reset spring 72, the slide column 71 is slidingly connected with a face plate 73, the face plate 73 is elastically connected with the reset spring 72, the center of the face plate 73 has a second circular port 74, the second circular port 74 is installed with a material pipe 75, the lower end of the material pipe 75 extends into the hopper 60; the material pipe 75 is fixed with a screen 76 through bolts, the screen 76 is wide strip-shaped, the screen 76 arranged from top to bottom has equal angle intervals; the cover plate 69 is installed with a third bearing seat 77, the third bearing seat 77 is rotationally connected with a rotating shaft 78, the rotating shaft 78 is driven by a fourth motor 79; the rotating shaft 78 is installed with a first cam 80, the first cam 80 is rollingly connected with the face plate 73, the first cam 80 makes the material pipe 75 produce up-down reciprocating motion, disperses the iron ore powder, and prevents the hopper 60 from being blocked. The technical problems that can be solved are that the material is easy to agglomerate when entering the hopper 60, which causes poor feeding, and the material pipe 75 is easy to be blocked, and the problem that the material cannot be pre-dispersed is solved. Movement process: the fourth motor 79 drives the rotating shaft 78 to rotate, the rotating shaft 78 drives the first cam 80 to roll, the first cam 80 pushes the face plate 73 to move up and down along the slide column 71, the face plate 73 drives the material pipe 75 to reciprocate up and down; the material enters from the material pipe 75, is preliminarily screened and dispersed by the wide strip-shaped screen 76, the reciprocating material pipe 75 further disperses the material, and the reset spring 72 assists the face plate 73 and the material pipe 75 to reset. Advantageous effects: the reciprocating motion of the material pipe 75 cooperates with the wide strip-shaped screen 76, realizes the pre-dispersion and preliminary screening of the material, avoids the agglomeration of the material, the reset spring 72 ensures the stable motion of the material pipe 75, reduces the risk of blocking of the material pipe 75, improves the smoothness of feeding, and provides a uniform material basis for subsequent mixing and screening.

[0055] As Figure 23 and Figure 24As shown, as an optimization of Embodiment 1, the inner wall of the hopper 60 is connected to a spring seat 81, with two spring seats 81 forming a group. The spring seats 81 are located at the included angle of the hopper 60. The upper spring seat 81 is connected to a long spring 82, and the lower end of the long spring 82 is connected to a protruding rod 83. The protruding rod 83 is slidably connected to the lower spring seat 81. The outlet section of the hopper 60 is rotatably connected to a flap 84, which is used to push the protruding rod 83 to generate reciprocating motion, preventing material from accumulating at the included angle of the hopper 60. The flap 84 is connected to a fifth motor 86 through a worm gear assembly 85. The technical problem that can be solved is that material easily accumulates at the included angle of the hopper 60, leading to material waste, and the accumulated material easily blocks the outlet of the hopper 60, affecting the feeding efficiency. Movement Process: The fifth motor 86 drives the flap 84 to rotate via the worm gear assembly 85. When the flap 84 rotates, it pushes the convex rod 83 to slide along the lower spring seat 81. The convex rod 83 stretches or compresses the long spring 82. The elasticity of the long spring 82 causes the convex rod 83 to reset after being pushed by the flap 84. The reciprocating motion of the convex rod 83 cleans the material stuck at the angle of the hopper 60. Beneficial Effects: The reciprocating motion of the flap 84 and the convex rod 83 can effectively clean the material stuck at the angle of the hopper 60, avoiding material waste and clogging of the hopper 60.

[0056] like Figure 25 and Figure 26 As shown, as an optimization of Embodiment 1, the center of the end cap 67 is connected to a first main air pipe 87, and the other end of the first main air pipe 87 extends to the outside of the guide hopper 34. The first main air pipe 87 and the guide hopper 34 are not fixedly connected, which ensures that the two do not cause structural interference when the end cap 67 is displaced. The side wall of the first main air pipe 87 is connected to a first branch pipe 88 arranged at equal intervals. A first nozzle 89 is connected to the first branch pipe 88. The first nozzle 89 is opened at regular intervals to clean the material on the second screen plate 41. Technical problem solved: The surface of the second screen plate 41 is prone to material adhesion, and long-term accumulation affects the screening efficiency and screen plate life. Movement process: The air source of the first main air pipe 87 is opened at regular intervals. The gas is transported to the first nozzle 89 through the first branch pipe 88. The first nozzle 89 sprays gas onto the surface of the second screen plate 41 to blow away the material adhering to the second screen plate 41. Beneficial effects: Gas jet cleaning can remove the attached material on the surface of the second screen plate 41 and prevent screen hole clogging; the timed start design can adjust the cleaning frequency according to the material attachment, which can not only ensure the cleaning effect, but also avoid energy waste and extend the service life of the second screen plate 41.

[0057] like Figure 27-30As shown, as the optimization of embodiment one, the transverse plate 27 is provided with a pipe base 90, the second main air pipe 91 is connected to the pipe base 90, the second branch pipes 92 are arranged at equal intervals on the side wall of the second main air pipe 91, the second branch pipes 92 extend into the guide plate 28, the second nozzles 93 are connected to the second branch pipes 92, and the second nozzles 93 are opened at a certain time to clean the material on the first sieve plate 24; the third branch pipes 94 are connected to the second main air pipe 91, the valve base 95 is connected to the third branch pipes 94, the airflow channel 96 is arranged on the valve base 95, the valve core 97 is slidably connected to the valve base 95, the air hole 98 is arranged on the valve core 97, the air path is communicated when the air hole 98 is opposite to the airflow channel 96, the push rod 99 is connected to the valve core 97, the push rod 99 is arranged on the guide rail 104, the guide rail 104 is connected to the support 100, the support 100 is connected to the transverse plate 27, the ball head base 101 is slidably connected to the guide rail 104, the cylindrical cam 102 is slidably connected to the ball head base 101, the first cam 80 groove is arranged on the cylindrical cam 102, and the cylindrical cam 102 is driven by the sixth motor 103. The technical problem that can be solved is that the material attached to the surface of the first sieve plate 24 is not completely cleaned. The movement process is as follows: the sixth motor 103 drives the cylindrical cam 102 to rotate, the first cam 80 groove of the cylindrical cam 102 drives the ball head base 101 to slide along the guide rail 104, the ball head base 101 pushes the push rod 99 and the valve core 97 to slide along the valve base 95; when the air hole 98 on the valve core 97 is opposite to the airflow channel 96 of the valve base 95, the air path is communicated, the gas is delivered to the second nozzle 93 through the third branch pipe 94, the second main air pipe 91 and the second branch pipe 92, and the gas is sprayed to the first sieve plate 24 to clean the material. The beneficial effect is that the second nozzle 93 cooperates with the brush roller 50 to form double cleaning, further prevent the sieve holes of the first sieve plate 24 from being blocked, and ensure the stable screening efficiency.

[0058] Although the present application has been described in detail with reference to the foregoing embodiments, technical solutions recorded in the foregoing embodiments can be modified or replaced by equivalent ones, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A screening device for mixing iron ore fines with an anti-freezing agent, characterized in that, The utility model provides a kind of iron ore mixing machine, including rack (1), the top of rack (1) is inclined;The top surface of rack (1) is equipped with first support seat (2);The upper end of first support seat (2) is connected with base (3), the upper end of base (3) is equipped with first bearing seat (5), first bearing seat (5) is rotatably connected with gyro wheel (6), the shaft end of gyro wheel (6) is connected with universal coupling (7), universal coupling (7) other end is connected with axle rod (8), axle rod (8) free end is connected with the reducer (9) for being equipped in the upper end of second support seat (10), second support seat (10) is connected with rack (1);Reducer (9) is driven by first motor (11) for being equipped on rack (1);Two gyro wheels (6) are a group, two groups of gyro wheels (6) are rotatably connected with drum screen assembly (12) for mixing iron ore powder and antifreeze agent, and mixed material is discharged from the screen hole of drum screen assembly (12);The rack (1) is connected with extension frame (53);Extension frame (53) is connected with machine base (54);The top surface of machine base (54) is installed moving mechanism, and moving mechanism is installed with conical hopper (60);The lower port of hopper (60) is connected with feeding mechanism for feeding to drum screen assembly (12);The inner wall of the hopper (60) is connected with spring seat (81) at included angle, two spring seats (81) are a group, the upper end of spring seat (81) is connected with long spring (82), the lower end of long spring (82) is connected with convex rod (83), and convex rod (83) is slidably connected with the lower end of spring seat (81);The outlet section of the hopper (60) is rotatably connected with flap (84), and flap (84) is used to push convex rod (83) to generate reciprocating motion;Flap (84) is connected with fifth motor (86) by worm gear assembly (85);Moving mechanism includes slide rail (56) for being equipped on machine base (54), two slide rails (56) are slidably connected with slide base (57), slide base (57) is connected with load plate (58), load plate (58) is installed with third vertical rod (59), and the top surface of third vertical rod (59) is used to install hopper (60);Feeding mechanism includes fourth pipe body (62) connected with hopper (60);The lower side wall of fourth pipe body (62) is connected with push plate (63), and push plate (63) is located at the connecting place of hopper (60) and fourth pipe body (62), and push plate (63) is driven by telescopic rod (64), and telescopic rod (64) is connected with machine base (54);One end of fourth pipe body (62) is connected with third motor (65), the shaft end of third motor (65) is connected with spiral auger (66), and the other end of fourth pipe body (62) is connected with end cover (67) rotatably connected with spiral auger (66);The side wall of fourth pipe body (62) is opened with discharge port (68) extending into drum screen assembly (12);The upper port of the hopper (60) is connected with cover plate (69) with first round mouth (70) in the center;The top surface of the cover plate (69) is provided with four symmetrical slide columns (71), the side wall of the slide column (71) is sleeved with a reset spring (72), the slide column (71) is slidably connected with a face plate (73) which is elastically connected with the reset spring (72), the center of the face plate (73) is provided with a second circular port (74), and a material pipe (75) extending into the hopper (60) is installed on the second circular port (74); the sieve screen (76) is fixed in the material pipe (75) by bolts, the sieve screen (76) is wide strip-shaped, and the arranged interval of the sieve screen (76) arranged from top to bottom is equal; the cover plate (69) is provided with a third bearing seat (77), the third bearing seat (77) is rotatably connected with a rotating shaft (78) driven by a fourth motor (79), the rotating shaft (78) is provided with a first cam (80), and the first cam (80) is rollingly connected with the face plate (73).

2. The screening device for mixing iron ore fines with anti-freezing agents as claimed in claim 1 wherein, The rack (1) comprises four symmetrically arranged columns (13), the lower side wall of the column (13) is connected with a horizontally arranged bottom beam (14), the bottom beam (14) and the column (13) form a frame structure; the top surface of the column (13) is connected with an inclined top beam (15), the top beam (15) and the column (13) form a frame structure; the first support seat (2) is installed on the upper end of the top beam (15), and the vertical beam (16) is arranged at equal intervals between the top beam (15) and the bottom beam (14).

3. The screening apparatus for mixing iron ore fines with anti-freezing agents as claimed in claim 1 wherein, The drum screen assembly (12) comprises a first pipe body (17) and a second pipe body (18) symmetrically arranged along the center line of the inclined direction of the top surface of the rack (1), the outer side wall of the first pipe body (17) and the second pipe body (18) is connected with an annular track (19), and the annular track (19) is located at the inner side port of each pipe body close to the center of the drum screen assembly (12), the outer side port of the first pipe body (17) and the second pipe body (18) is connected with a first material blocking ring (20); the inner side wall of the first pipe body (17) and the second pipe body (18) is connected with first support rods (21) arranged at equal angles, the interval angle of the first support rod (21) is 18°, a plurality of first support rods (21) form a ring structure, the outer side wall of the first support rod (21) is connected with a first separation ring plate (22), the outer side wall of the first support rod (21) is connected with a first outer support ring (23), two first outer support rings (23) form a group, the first outer support ring (23) is located between the first separation ring plate (22), and the first outer support ring (23) is provided with a first screen plate (24) for screening materials; the first screen plate (24) is C-shaped, and two first screen plates (24) are fixed to form a tubular screening structure by a first positioning bolt (25).

4. The screening apparatus for mixing iron ore fines with anti-freezing agents as claimed in claim 3 wherein, The top beam (15) of the rack (1) is connected with first vertical rods (26) arranged at equal intervals, the upper end of the first vertical rod (26) is connected with a cross plate (27) located between the two annular tracks (19); the cross plate (27) is connected with a material guide plate (28) for concentrating materials, and a discharging gap (29) is left between the two material guide plates (28); the top beam (15) of the rack (1) is connected with a second vertical rod (32), the upper end of the second vertical rod (32) is connected with a top plate (33), and the bottom surface of the top plate (33) is connected with a material guide bin (34) for concentrating and discharging impurities.

5. The screening apparatus for mixing iron ore fines with anti-freezing agents as claimed in claim 3 wherein, The inner wall of the first pipe body (17) and the second pipe body (18) is fixed with the third pipe body (36) through the connecting piece (35), the outer side port of the third pipe body (36) protrudes outside the first pipe body (17) and the second pipe body (18), and the second material blocking ring (37) is connected to the outer side port of the third pipe body (36); The inner side of the third pipe body (36) is connected with the second support rod (38) arranged at equal angles, the second support rod (38) is spaced by an angle of 36°, and a plurality of second support rods (38) form a ring structure, the outer side wall of the second support rod (38) is connected with the second separation ring plate (39), the outer side wall of the second support rod (38) is connected with the second outer support ring (40), two second outer support rings (40) form a group, a group of second outer support rings (40) is located between the second separation ring plate (39), and the second outer support ring (40) is provided with the second sieve plate (41), and the second sieve plate (41) is used for screening iron ore powder and antifreeze.

6. The screening apparatus for mixing iron ore fines with anti-freezing agents as claimed in claim 5 wherein, The second sieve plate (41) is C-shaped and two are fixed to form a tubular screening structure through the second positioning bolt (42); or the second sieve plate (41) is plate-shaped, and adjacent second sieve plates (41) are fixed to form a prism-shaped screening structure through the second positioning bolt (42).

7. The screening apparatus for mixing iron ore fines with anti-freezing agents as claimed in claim 5 wherein The pipe wall of the first pipe body (17) and the third pipe body (36) is provided with a corresponding screw hole (44), the pipe wall of the second pipe body (18) and the third pipe body (36) is provided with a corresponding screw hole (44), the connecting piece (35) includes a double-headed screw rod (45) penetrating the screw hole (44), the side wall of the double-headed screw rod (45) has a tangent plane (46), the tangent plane (46) is buckled with a pad (47) shaped as C, and two symmetrical pads (47) are fixed through countersunk screws (48).

8. The screening apparatus for mixing iron ore fines with anti-freezing agents as claimed in claim 2 wherein, The top beam (15) is provided with a second bearing seat (49), two second bearing seats (49) are rotatably connected with a brush roller (50) for cleaning the drum screen assembly (12); the brush roller (50) is connected with a second motor (52) arranged on the top beam (15) through chain transmission (51).

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